Seal for a rotary shaft



FIG. 1 is a perspective view of a seal for a rotary shaft showing our design;

FIG. 2 is a side elevational view thereof, the view from all sides being identical;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a rear elevational view thereof.

The broken line showing of the interior hubs of the seals is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

The ornamental design for a seal for a rotary shaft, as shown and described. 